Specifications:

Description: wireless headphones
1. Cool design deep bass headset 
2. Enriched sound and reliable quality 
3. Competitive price
4: Bluetooth version: Bluetooth V3.0+EDR
5: Effective range: 10 meter

Working time of  wireless headphones  : 
Music: Up to 6 hours
Talk: Up to 6 hours 
Standby time: up to 250 hours
Input: DC: 5V/130mA
Charging time: about 3 hours
Microphone: build-in.
Rechargable: USB mini 5 pin cable